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<?php
namespace Protobuf;
use Protobuf\Binary\Platform\PlatformFactory;
use Protobuf\Extension\ExtensionRegistry;
use Protobuf\Binary\SizeCalculator;
use Protobuf\Binary\StreamWriter;
use Protobuf\Binary\StreamReader;
/**
* Base configuration class for the protobuf
*
* @author Fabio B. Silva <fabio.bat.silva@gmail.com>
*/
class Configuration
{
/**
* @var \Protobuf\Extension\ExtensionRegistry
*/
private $extensionRegistry;
/**
* @var \Protobuf\Binary\Platform\PlatformFactory
*/
private $platformFactory;
/**
* @var \Protobuf\Binary\StreamWriter
*/
private $streamWriter;
/**
* @var \Protobuf\Binary\StreamReader
*/
private $streamReader;
/**
* @var \Protobuf\Binary\SizeCalculator
*/
private $sizeCalculator;
/**
* @var \Protobuf\DescriptorLoader
*/
protected static $instance;
/**
* Return a ExtensionRegistry.
*
* @return \Protobuf\Extension\ExtensionRegistry
*/
public function getExtensionRegistry()
{
if ($this->extensionRegistry === null) {
$this->extensionRegistry = new ExtensionRegistry();
}
return $this->extensionRegistry;
}
/**
* Set a ExtensionRegistry.
*
* @param \Protobuf\Extension\ExtensionRegistry $extensionRegistry
*/
public function setExtensionRegistry(ExtensionRegistry $extensionRegistry)
{
$this->extensionRegistry = $extensionRegistry;
}
/**
* Return a PlatformFactory.
*
* @return \Protobuf\Binary\Platform\PlatformFactory
*/
public function getPlatformFactory()
{
if ($this->platformFactory !== null) {
return $this->platformFactory;
}
return $this->platformFactory = new PlatformFactory();
}
/**
* Return a StreamReader
*
* @return \Protobuf\Binary\StreamReader
*/
public function getStreamReader()
{
if ($this->streamReader !== null) {
return $this->streamReader;
}
return $this->streamReader = new StreamReader($this);
}
/**
* Return a StreamWriter
*
* @return \Protobuf\Binary\StreamWriter
*/
public function getStreamWriter()
{
if ($this->streamWriter !== null) {
return $this->streamWriter;
}
return $this->streamWriter = new StreamWriter($this);
}
/**
* Return a SizeCalculator
*
* @return \Protobuf\Binary\SizeCalculator
*/
public function getSizeCalculator()
{
if ($this->sizeCalculator !== null) {
return $this->sizeCalculator;
}
return $this->sizeCalculator = new SizeCalculator($this);
}
/**
* Sets the PlatformFactory.
*
* @param \Protobuf\Binary\Platform\PlatformFactory $platformFactory
*/
public function setPlatformFactory(PlatformFactory $platformFactory)
{
$this->platformFactory = $platformFactory;
}
/**
* Create a compute size context.
*
* @return \Protobuf\ComputeSizeContext
*/
public function createComputeSizeContext()
{
$calculator = $this->getSizeCalculator();
$context = new ComputeSizeContext($calculator);
return $context;
}
/**
* Create a write context.
*
* @return \Protobuf\WriteContext
*/
public function createWriteContext()
{
$stream = Stream::create();
$writer = $this->getStreamWriter();
$sizeContext = $this->createComputeSizeContext();
$context = new WriteContext($stream, $writer, $sizeContext);
return $context;
}
/**
* Create a read context.
*
* @param \Protobuf\Stream|resource|string $stream
*
* @return \Protobuf\ReadContext
*/
public function createReadContext($stream)
{
$reader = $this->getStreamReader();
$registry = $this->extensionRegistry;
$context = new ReadContext($stream, $reader, $registry);
return $context;
}
/**
* Returns single instance of this class
*
* @return \Protobuf\Configuration
*/
public static function getInstance()
{
if (self::$instance !== null) {
return self::$instance;
}
return self::$instance = new Configuration();
}
}